Machine for shaping cardboard articles



1 0.13 GR 200279649 N g E. H. NEWTON 2,027,649

MACHINE FOR SHAPING CARDBOARD ARTICLES Filed Sept. 18, 1933 4 Sheets-Sheet 1 Jam 14, 1936.

INVENTOR E. H. NEWTON MACHINE FOR SHAPING CARDBOARD ARTICLES Jan. 14, 1936.

Filed Sept. 18, 1933 4 Sheets-Sheet 2 E Q Q R W 1 KAN Jan. I4, 1936. H NEWTON 2,027,649

MACHINE FOR SHAPING CARDBOARD ARTICLES Filed Sept. 18, 1933 4 SheetsSheet 5 ATTCJRNEY Jam I4, 1936. H, NEWTON 2,027,649

MACHINE FOR SHAPING CARDBOARD ARTICLES Filed Sept. 18, 1933 4 Sheets-Sheet 4 I; I W f INVENTOR ATTORNEY Patented Jan. 14, 1936 UNITED STATES PATENT OFFICE MACHINE FOR SHAPING CARDBOARD ARTICLES Application September 18, 1933, Serial No. 689,948

12 Claims.

This invention relates to a machine for shaping cardboard articles, such as the cardboard shields employed in connection with wire clothes hangers and has for its principal objects to pro- 5 vide for continuous high speed shaping of cardboard blanks whereby they receive a permanent curvature and set, to provide for automatically glazing the outer surfaces of the articles incidental to the shaping thereof, and to provide for 10 automatically printing the articles upon their discharge from the machine.

In accomplishing these and other objects of the invention, I have provided improved details of structure, the preferred form of which is illus- 5 trated in the accompanying drawings, wherein:

Fig. l is a perspective view of a cardboard shaping machine constructed in accordance with my invention.

Fig. 2 is an enlarged longitudinal vertical sec- 20 tion through the machine.

Fig. 3 is a plan view of the machine.

Fig. 4 is an enlarged detail fragmentary perspective view of a portion of the machine, particularly illustrating one of the sets of ironing disks 25 or rollers, the disks or rollers being shown in section to better illustrate the construction.

Fig. 5 is an enlarged cross-sectional view through the machine on the line 5-5, Fig. 3.

Fig. 6 is a cross-section through the ironing 30 track on the line 66, Fig. 2.

Fig. 7 is an enlarged detail perspective view of the feeding apparatus for delivering the blanks for consecutive passage through the machine.

35 Fig. 8 is a cross-sectional view through the ma chine on the line 8-8, Fig. 2.

Fig. 9 is a perspective view of one of the cardboard blanks.

Fig. 10 is a similar perspective view of the card- 40 board blank illustrating the shape imparted thereto after passing through the machine.

Referring more in detail to the drawings:

l designates a table or supporting frame for the machine which in the illustrated instance 45 includes a horizontal rectangular shaped top 2 of sufilcient length to mount the shaping apparatus and which is supported by legs 3 located at the corners thereof, as illustrated in Fig. 1.

Supported upon one end of the table on spaced 50 vertical posts I and 5 is a plate 6 having a horizontal portion 1 and an upwardly inclined rearwardly extending portion 8 forming a support for a plurality of cardboard blanks 9 that are to be delivered through the machine.

65 h posts 4 and 5 preferably include rods having threaded upper ends l projecting through openings in the horizontal portion 1 of the plate, and carry nuts H and I2 for engaging opposite sides thereof whereby the plate may be adjusted vertically relatively to the shaping rollers, later described.

Fixed to the upper face of the inclined portion 8 are spaced angles l3 and I4 arranged so that the vertical legs l5 and I 6 thereof form guides for retaining the blanks 9 in stacked relation preparatory to their delivery into the machine.

In order to feed the blanks from the stack, I provide a feed roller l1 and a counter feed roller l8 that are supported above and below the plate portions 1 and 8 respectively, the feed roller H being fixed to a shaft I9 that is rotatably mounted in arms and 2| carried by brackets 22 and 23 and by the upper ends of the posts 4 and 5, as best illustrated in Figs. 1 and 7.

The roller I8 is mounted on the shaft 24 hav- 20 ing its ends rotatably mounted in angle clips 25 depending from the lower face of the plate I at a point directly below the shaft l9. The roller I1 is preferably provided with a gripping surface 26 for contacting the ends of the blanks sup- 25 ported by the plate portion 8 and which are also contacted by the roller l8 through a rectangular shaped opening 21, Figs. 2 and 7, whereby the blanks are individually drawn from the stack and delivered across the plate portion 1 to be engaged by forming and shaping rollers 28 and 29.

In order to regulate the withdrawal of the blanks from the stack and to effect their individual feed by the feed rollers l1 and I8, I provide a feed regulator 30 including a channel shaped arm 3| that is pivotally mounted between ears 32 and 33 carried on the lower side of the plate portion 8 at opposite sides of the opening 21, as best illustrated in Fig. 7.

The arm 3| is pivotally connected to the ears by pins 34 located substantially midway of the length thereof to provide free opposite ends 35 and 36. Fixed to the end 36 of the arm and adapted to yieldingly engage the periphery of the feed roller I1 is a flexible strip 31, the pressure of the strip 31 against the roller 11 being adjusted by a set screw 38 which is threadedly mounted in an opening 39 in the end 35 of the arm 3! and which is adapted to engage against the plate 8 to adjust the relative position of the arm and pressure of the strip 31.

The set screw 38 is retained in adjusted position by a lock nut 40 threaded on the screw and engaging against the arm 3|, as illustrated in Fig. 2.

nuu

Cooperating with the feed rollers I1 and I8 is an idler roller 4I supported above the plate portion I to retain the ends of the blanks in contact therewith so that they are delivered directly between the forming rollers 28 and 29, the roller 4I being carried on a bracket 42 depending from the arm 2|.

The forming and shaping roller 28 includes a flat disk having its periphery 43 of semicircular cross-section to impart a semicircular curvature to the blanks. The complementary roller 29 is of smaller diameter and is provided with a concave periphery 44 conforming to the periphery of the roller 28.

The roller 28 is mounted on a shaft 45 having its ends 46 and 41 rotatably mounted in bearings 48 and 49 carried by the brackets 22 and 23, previously described.

The roller 29 is fixed to a shaft 59 that is rotatably mounted in a recess 5| at one end of an ironing block 52 that is mounted on the table in alignment with the feed rollers. The ironing block is also provided with a longitudinal groove 53 in its upper face conforming in shape to the curvature imparted to the blanks by the rollers 28 and 29.

The axes of the shafts 45 and 59 are located at an elevation above the table so that the contacting peripheries of the forming rollers are in substantial alignment with the upper surface of the plate I and the groove 53.

In order to drive the rollers 28 and 29, the end 41 of the shaft 45 projects from the bearings 49 to mount a drive pulley 54 which is driven by a belt 55 operating over the drive pulley 56 of a suitable electric motor 51 that is carried below the table 2 as best illustrated in Fig. l. The opposite end of the shaft 45 projects from the bearing 48 and carries a sprocket 58 aligning with a similar sprocket 59 on the shaft I9 carrying the feed roller II, the sprocket 59 being driven from the sprocket 58 by a chain 69.

To heat the ironing block 52, the sides thereof are equipped with suitable electric heaters 6| and 62 which are connected to a source of current supply through conductors 63 and 64.

Extending from the delivery end 65 of the ironing block is an inverted channel shaped guide supporting member 66 that is carried above the table 2 in alignment with the groove in the ironing block by spaced pairs of brackets 61 and 68 having their upper ends fixed to the depending flanges 69 of the channel member and their lower ends fixed to the table top 2, as best illustrated in Fig. 8.

Mounted on the upper face of the web 19 of the channel member 66 are spaced angle members II and 12 having their horizontal legs lying flatly against the channel 66 and their vertical legs I3 and 14 forming guides for the cardboard articles to retain them in guided relation with pairs of ironing rollers I5, I6 and II which cooperate with rollers I8, I9 and 89.

The rollers I5, I6 and II are similar in shape to the roller 28 and are mounted on shafts 8| that are rotatably carried in bracket plates 82 and 83 projecting upwardly from the flanges 69 of the channel member 66, as best illustrated in Fig. 8, while the lower rollers I8, I9 and 89, similar in shape to the roller 29 are mounted on shafts 84 that are positioned in notches 85 and 86 formed in the depending flanges of the channel and in the lower ends of the bracket plates 82 and 83, Fig. 4, so that the upper portions of these rollers may project through slots in the body portion of the channel. 66 (Fig. 2).

To retain the periphery of the rollers I8, I9

and 89 in yielding contact with the rollers I5,

I6 and II, the shafts 84 are carried in bearing sleeves 81 and 88 fixed to the arms 89 of crank levers 99 which are pivotally mounted in bearing openings 9| formed in the depending flanges of the channel member, and have lever arms 92 extending rearwardly of the machine in a direction opposite to the arms 89 and which are yieldingly anchored to the table top 2 by coil springs 93 having one end fixed to the arm 92 and opposite ends to hooks 94 on the table.

It is thus apparent that the springs 93 through the arms 92 and 89 of the crank levers retain the lower rollers in yielding contact with the peripheries of the upper ironing rollers.

The guide track is also heated from electric heaters which are suspendingly supported from the lower face of the channel member 66 by insulated posts 96, Fig. 8.

To drive the ironing rollers I5, I6 and II, the shaft 45 is provided with a sprocket wheel 91 located thereon between the bearing 49 and the pulley 54 and which actuates a chain 98 operating over a sprocket wheel 99 on the projecting end of the shaft for the ironing roller I5 to actuate the ironing roller I5, its complementary roller I8 being driven through gears I99 and IN fixed to the opposite end of the shaft 8| and to a projecting end of the shaft 84, as best illustrated in Fi 4.

The ironing rollers I6, I9 and I1, 89 are driven by a chain I92 operating over a sprocket I93 on the shaft of the roller 15 and over sprockets I94 and I95 on the shafts of the rollers I6 and TI.

The rollers I9 and 89 are driven from the shafts of the rollers I6 and II by sets of gears I96 and I91 similar to the gears I99 and IN,-

with the chain I92 by a coil spring II2 having.

one end fixed to the free end of a lever III and its opposite end to a pin I I3 projecting from the sides of the ironing block.

In order to prevent the ends of the blanks from curving upwardly away from the guides, the I side edges of the groove in the ironing block and the vertical flanges 13 and I4 of the guide track are provided with inwardly extending flanges I I4 and I I5 to form stops for engaging the side edges of the blanks when they are bent to form as later described.

In order to print formed articles, the discharge end of the channel iron 66 is provided with a pair of brackets I I6 and I II having upwardly extending arms H8 and H9 between which is rotatably mounted a printing roller I29 and an inking roller I2I which contacts with the periphery of the printing roller. The periphery of the printing roller carrying type I22 is mounted so as to engage the blanks as they are delivered from the machine. The upper ends of the arms H8 and I I9 carry a reservoir I23 for containing a printing fluid which is dripped through a nozzle I24 onto the inking roller.

The blanks for which the illustrated machine UUGILH is constructed are best illustrated in Figs. 9 and and are shown as to include a flat strip A having notched ends B adapted to engage the arms of a.suit hanger to retain the strip on the pants bar of the hanger.

After the blank is delivered through the machine, it is formed in a trough shape, as illustrated in Fig. 10, so as to provide an extended rounded surface.

The machine may be enclosed by a housing I26, Fig. 8, to form a guard over the driving mechanism and to retain the heat of the heating elements.

In using a machine constructed and assembled as described, the blanks are first tempered by treating them with a suitable fluid to render them pliable. The blanks are then stacked on the plate portion 8 between the guides l5 and l 6 with the ends thereof fanned out, as clearly illustrated in Fig. 2, so that the topmost blank engages between the periphery of the roller l1 and the feed regulating strip 31.

When the machine is started, the operation of the feed roller causes the first blank to be drawn across the table portion 1 onto the roller l8 from where it is discharged between the forming and shaping rollers 28 and 29 to be shaped thereby as shown in Fig. 10.

As the blanks are delivered across the ironing block, heat imparted to the block from the electric heaters tends to dry the blanks and cause them to take on an initial set so that they are retained in the shape which has been imparted to them. The blanks will continue their travel through the guide-way formed between angles H and 12 where the ironing rollers continue the ironing and drying of the blanks. At the time of their discharge from the rollers 11 and 80, they are completely dried and passed to the printing roller where suitable indicia or advertisements may be applied.

As soon as the first blank has been delivered from the stack, the periphery of the feed roller engages the end of the next blank to cause its withdrawal and discharge into the machine.

From the foregoing, it is apparent that I have provided a machine of simple construction, which is well adapted to the forming and shaping of cardboard articles, and which is capable of high speed operation.

What I claim and desire to secure by Letters Patent is:

1. In a machine of the character described, a support, means on the support for retaining a stack of blanks, shaping rollers, means for mounting the shaping rollers on the support in receiving relation with the blank supporting means, an ironing member having a shaped track conforming to the shape imparted to the blanks by said shaping rollers, means for individually feeding the blanks from the stack through the shaping rollers to shape the blanks, and means for moving said blanks over the track over said ironing member.

2. In a machine of the character described, a support, means on the support for retaining a stack of blanks, blank shaping means on the support in receiving relation with the blank supporting means, blank ironing means on the support in receiving relation with said shaping means, means individually feeding the blanks from the stack through the shaping means to shape the blanks, and means for advancing the blanks across said ironing means.

3. In a machine of the character described, a

support, means on the support for retaining a stack of blanks, means for individually withdrawing blanks from the stack, blank shaping means on the support in the path of the blanks withdrawn from the stack, blank ironing means on the support for receiving the blanks from said shaping means, means for advancing the blanks across said ironing means, and means for heating the blank ironing means.

4. In a machine of the character described, a support, means on the support for retaining a stack of blanks, a guide track on the support, means carried by the support for individually feeding blanks from the stack to said guide track, a series of shaping rollers associated with the guide track for advancing and shaping the blanks, and means for heating the guide track.

5. In a machine of the character described, a support, means for retaining a stack of blanks on the support, an ironing block having a shaped guide groove, means associated with the stack retaining means for individually feeding the blanks from the stack to the groove in said ironing block, shaping rollers associated with the ironing block for shaping the blanks to conform with the shape of the guide groove in the block, means for heating the ironing block, and means for advancing the blanks.

6. In a machine of the character described, a support, means for retaining a stack of blanks on the support, an ironing block having a guide groove, means associated with the stack retaining means for individually feeding the blanks from the stack to the groove in said ironing block,

shaping rollers associated with the ironing block for shaping the blanks to conform with the guide groove in the block, means for heating the ironing block, means for advancing the blanks, and means forming a continuation of said ironing block for retaining heat on the blanks.

7. In a machine of the character described, a support, means for retaining a stack of blanks on the support, an ironing block, means associated with the stack retaining means for individually feeding the blanks from the stack 8. In a machine of the character described,

shaping and ironing couples successively engageable with blanks to be formed and operable to advance the blanks simultaneously with shaping and ironing of the blanks, means for feeding individual blanks to the shaping and ironing couples in successive order, and means for heating a member of the ironing couple.

9. In a machine of the character described, shaping and ironing couples successively engageable with blanks to be formed and operable to advance the blanks simultaneously with shaping and ironing of the blanks, means for feeding individual blanks to the shaping and ironing couples in successive order, and means gawk: the blanks adjacent the shaping couple.

10. In a machine of the character described, shaping and ironing couples successively engageable with blanks to be formed and operable to advance the blanks simultaneously with shaping iii.

and ironing of the blanks, means for feeding individual blanks to the shaping and ironing couples in successive order, and means for heating the blanks adjacenathe ironing couple.

11. In a, machine of the character described, shaping and ironing couples successively engageable with blanks to be formed and operable to advance the blanks simultaneously with shaping and ironing of the blanks, means for feeding individual blanks to the shaping and ironing couples in successive order, means for guiding the blanks adjacent said couples, and means for heating the blanks while in the guides.

12. In a machine of the character described, an

ironing block including a shaped guide track. means for heating the block to eflect set of blanks passed over the guide track, a guide track forming a continuation of the track in the ironing block; 

